Date: Sat, 10 Nov 2007 21:30:24 +0100 From: Henri Hennebert <hlh@restart.be> To: Pawel Jakub Dawidek <pjd@freebsd.org> Cc: freebsd-current@freebsd.org, freebsd-stable@freebsd.org Subject: Re: ZFS deadlock ? Message-ID: <473614E0.8010401@restart.be> In-Reply-To: <20071110124806.GI37371@garage.freebsd.pl> References: <47348CAC.5020208@restart.be> <20071110085312.GG37371@garage.freebsd.pl> <4735986F.5000307@restart.be> <20071110124806.GI37371@garage.freebsd.pl>
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Pawel Jakub Dawidek wrote: > On Sat, Nov 10, 2007 at 12:39:27PM +0100, Henri Hennebert wrote: >> Pawel Jakub Dawidek wrote: >>> On Fri, Nov 09, 2007 at 05:37:00PM +0100, Henri Hennebert wrote: >>>> hello >>>> >>>> To push zfs, I launch 2 scrub at the same time, after ~20 seconds the >>>> system freeze: >>> [...] >>> >>> I found a deadlock too. If it's reproducable for you, can you try this >>> patch: >> I reproduce it after 30 minutes, si I try you patch. >> >>> http://people.freebsd.org/~pjd/patches/zgd_done.patch >> when I try to load zfs.ko I get: >> >> # kldload zfs >> link_elf: symbol kproc_create undefined >> kldload: can't load zfs: No such file or directory >> >> What must I add to my config to resolve this symbol / problem > > Ouch, you don't use HEAD. Try changing kproc_*() to kthread_*(). > It load correctly now... Moreover, no deadlock after multiple scrub in // and some buildworld to make sure... look fine for my config :-) Just to give credit to zfs, scrub encounter 2 IO errors without impact on my data :) /var/log/messages: Nov 10 15:33:00 morzine kernel: ad6: TIMEOUT - READ_DMA48 retrying (1 retry left) LBA=299882429 Nov 10 15:33:06 morzine kernel: ad6: TIMEOUT - READ_DMA48 retrying (0 retries left) LBA=299882429 Nov 10 15:33:12 morzine kernel: ad6: FAILURE - READ_DMA48 timed out LBA=299882429 Nov 10 16:55:53 morzine kernel: ad6: WARNING - SETFEATURES SET TRANSFER MODE taskqueue timeout - completing request directly Nov 10 16:55:53 morzine kernel: ad6: TIMEOUT - READ_DMA48 retrying (1 retry left) LBA=299883325 Nov 10 16:56:06 morzine kernel: ad6: TIMEOUT - READ_DMA48 retrying (0 retries left) LBA=299883325 Nov 10 16:56:13 morzine kernel: ad6: FAILURE - READ_DMA48 timed out LBA=299883325 ZFS is realy great! I will run more test tomorrow... and keep you posted Thanks Henri
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